cisco/enic/enic_res.h

0001 /* SPDX-License-Identifier: GPL-2.0-only */
0002 /*
0003  * Copyright 2008-2010 Cisco Systems, Inc.  All rights reserved.
0004  * Copyright 2007 Nuova Systems, Inc.  All rights reserved.
0005  */
0006
0007 #ifndef _ENIC_RES_H_
0008 #define _ENIC_RES_H_
0009
0010 #include "wq_enet_desc.h"
0011 #include "rq_enet_desc.h"
0012 #include "vnic_wq.h"
0013 #include "vnic_rq.h"
0014
0015 #define ENIC_MIN_WQ_DESCS       64
0016 #define ENIC_MAX_WQ_DESCS       4096
0017 #define ENIC_MIN_RQ_DESCS       64
0018 #define ENIC_MAX_RQ_DESCS       4096
0019
0020 #define ENIC_MIN_MTU            ETH_MIN_MTU
0021 #define ENIC_MAX_MTU            9000
0022
0023 #define ENIC_MULTICAST_PERFECT_FILTERS  32
0024 #define ENIC_UNICAST_PERFECT_FILTERS    32
0025
0026 #define ENIC_NON_TSO_MAX_DESC       16
0027
0028 #define ENIC_SETTING(enic, f) ((enic->config.flags & VENETF_##f) ? 1 : 0)
0029
0030 static inline void enic_queue_wq_desc_ex(struct vnic_wq *wq,
0031     void *os_buf, dma_addr_t dma_addr, unsigned int len,
0032     unsigned int mss_or_csum_offset, unsigned int hdr_len,
0033     int vlan_tag_insert, unsigned int vlan_tag,
0034     int offload_mode, int cq_entry, int sop, int eop, int loopback)
0035 {
0036     struct wq_enet_desc *desc = vnic_wq_next_desc(wq);
0037     u8 desc_skip_cnt = 1;
0038     u8 compressed_send = 0;
0039     u64 wrid = 0;
0040
0041     wq_enet_desc_enc(desc,
0042         (u64)dma_addr | VNIC_PADDR_TARGET,
0043         (u16)len,
0044         (u16)mss_or_csum_offset,
0045         (u16)hdr_len, (u8)offload_mode,
0046         (u8)eop, (u8)cq_entry,
0047         0, /* fcoe_encap */
0048         (u8)vlan_tag_insert,
0049         (u16)vlan_tag,
0050         (u8)loopback);
0051
0052     vnic_wq_post(wq, os_buf, dma_addr, len, sop, eop, desc_skip_cnt,
0053             (u8)cq_entry, compressed_send, wrid);
0054 }
0055
0056 static inline void enic_queue_wq_desc_cont(struct vnic_wq *wq,
0057     void *os_buf, dma_addr_t dma_addr, unsigned int len,
0058     int eop, int loopback)
0059 {
0060     enic_queue_wq_desc_ex(wq, os_buf, dma_addr, len,
0061         0, 0, 0, 0, 0,
0062         eop, 0 /* !SOP */, eop, loopback);
0063 }
0064
0065 static inline void enic_queue_wq_desc(struct vnic_wq *wq, void *os_buf,
0066     dma_addr_t dma_addr, unsigned int len, int vlan_tag_insert,
0067     unsigned int vlan_tag, int eop, int loopback)
0068 {
0069     enic_queue_wq_desc_ex(wq, os_buf, dma_addr, len,
0070         0, 0, vlan_tag_insert, vlan_tag,
0071         WQ_ENET_OFFLOAD_MODE_CSUM,
0072         eop, 1 /* SOP */, eop, loopback);
0073 }
0074
0075 static inline void enic_queue_wq_desc_csum(struct vnic_wq *wq,
0076     void *os_buf, dma_addr_t dma_addr, unsigned int len,
0077     int ip_csum, int tcpudp_csum, int vlan_tag_insert,
0078     unsigned int vlan_tag, int eop, int loopback)
0079 {
0080     enic_queue_wq_desc_ex(wq, os_buf, dma_addr, len,
0081         (ip_csum ? 1 : 0) + (tcpudp_csum ? 2 : 0),
0082         0, vlan_tag_insert, vlan_tag,
0083         WQ_ENET_OFFLOAD_MODE_CSUM,
0084         eop, 1 /* SOP */, eop, loopback);
0085 }
0086
0087 static inline void enic_queue_wq_desc_csum_l4(struct vnic_wq *wq,
0088     void *os_buf, dma_addr_t dma_addr, unsigned int len,
0089     unsigned int csum_offset, unsigned int hdr_len,
0090     int vlan_tag_insert, unsigned int vlan_tag, int eop, int loopback)
0091 {
0092     enic_queue_wq_desc_ex(wq, os_buf, dma_addr, len,
0093         csum_offset, hdr_len, vlan_tag_insert, vlan_tag,
0094         WQ_ENET_OFFLOAD_MODE_CSUM_L4,
0095         eop, 1 /* SOP */, eop, loopback);
0096 }
0097
0098 static inline void enic_queue_wq_desc_tso(struct vnic_wq *wq,
0099     void *os_buf, dma_addr_t dma_addr, unsigned int len,
0100     unsigned int mss, unsigned int hdr_len, int vlan_tag_insert,
0101     unsigned int vlan_tag, int eop, int loopback)
0102 {
0103     enic_queue_wq_desc_ex(wq, os_buf, dma_addr, len,
0104         mss, hdr_len, vlan_tag_insert, vlan_tag,
0105         WQ_ENET_OFFLOAD_MODE_TSO,
0106         eop, 1 /* SOP */, eop, loopback);
0107 }
0108
0109 static inline void enic_queue_rq_desc(struct vnic_rq *rq,
0110     void *os_buf, unsigned int os_buf_index,
0111     dma_addr_t dma_addr, unsigned int len)
0112 {
0113     struct rq_enet_desc *desc = vnic_rq_next_desc(rq);
0114     u64 wrid = 0;
0115     u8 type = os_buf_index ?
0116         RQ_ENET_TYPE_NOT_SOP : RQ_ENET_TYPE_ONLY_SOP;
0117
0118     rq_enet_desc_enc(desc,
0119         (u64)dma_addr | VNIC_PADDR_TARGET,
0120         type, (u16)len);
0121
0122     vnic_rq_post(rq, os_buf, os_buf_index, dma_addr, len, wrid);
0123 }
0124
0125 struct enic;
0126
0127 int enic_get_vnic_config(struct enic *);
0128 int enic_add_vlan(struct enic *enic, u16 vlanid);
0129 int enic_del_vlan(struct enic *enic, u16 vlanid);
0130 int enic_set_nic_cfg(struct enic *enic, u8 rss_default_cpu, u8 rss_hash_type,
0131     u8 rss_hash_bits, u8 rss_base_cpu, u8 rss_enable, u8 tso_ipid_split_en,
0132     u8 ig_vlan_strip_en);
0133 int enic_set_rss_key(struct enic *enic, dma_addr_t key_pa, u64 len);
0134 int enic_set_rss_cpu(struct enic *enic, dma_addr_t cpu_pa, u64 len);
0135 void enic_get_res_counts(struct enic *enic);
0136 void enic_init_vnic_resources(struct enic *enic);
0137 int enic_alloc_vnic_resources(struct enic *);
0138 void enic_free_vnic_resources(struct enic *);
0139
0140 #endif /* _ENIC_RES_H_ */